Designing Micro/Nano Systems for a Safer and Healthier Tomorrow

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If process modelling is a well known approach to compute the performances of fuel cell systems, the optimal design of systems where the process configuration is not fixed a priori remains an issue. The goal of the presented methodology for integrating and optimising fuel cell systems is to help in this preliminary design step. The thermo-economic model developed includes three parts : 1) the energy flow model that represent the thermodynamic performances of the chemical and energy conversions in the physica

The huge success of eBay has proven the demand for customer-to-customer (C2C) electronic commerce. eBay is a centralized infrastructure with all its scalability problems (network bandwidth, server load, availability, etc.). In this paper we argue that C2C e-commerce is an application domain that maps naturally onto the emergent field of P2P systems simply by its underlying interaction model of customers, i.e., peers. This offers the opportunity to take P2P systems beyond mere file sharing systems into inter

[1] We use the Green's tensor technique to study the optical processes taking place in configurations typically used for the replication and characterization of nanostructures. For the replication process we investigate light-coupling masks for optical contact lithography and for the characterization process the mode scattered by a defect or a short grating in a planar waveguide. Both configurations consist of structures embedded in a stratified background composed of a stack of material layers with differe

This paper compares three heuristic methods (SA, TS and GA) applied to the optimal location of FACTS devices in a power system. The optimizations are made on three parameters: the location of the devices, their types and their sizes. The FACTS devices are located in order to enhance the system security. Five types of FACTS controllers are modeled for steady-state studies: TCSC, TCVR, TCPST, SVC and UPFC. Simulations are performed on an IEEE 118-bus power system for several numbers of devices. Results show t

The implementation of bio-inspired systems in hardware has traditionally been more a matter of artistry than of method. The reasons are multiple, but one of the main problems has always been the lack of a universal platform, of a standardized architecture, and of a proper methodology for the implementation of such systems. The ideas presented in this article are the first results of a new research project, "Reconfigurable POEtic Tissue". The goal of the project is the development of a hardware platform capa

Although many Offline Cursive Word Recognition systems are based on HMMs, no attention was ever paid, to our knowledge, to the fact that the feature vectors are typically not in the most suitable form for modeling. They are most of the time correlated and embedded in a space of dimension higher than their Intrinsic Dimension. This leads to several problems and has a negative influence on the performance. By applying some transforms it is possible to solve, or at least to attenuate, such problems resulting i

Personalization in e-commerce has so far been server-centric, requiring users to create a separate individual profile on each server that they like to access. As product information is increasingly coming from multiple and heterogeneous sources, the number of profiles becomes unmanageably large. We present SmartClient, a technology based on constraint programming where a thin but intelligent client provides personalized information access for its user. As the process can run on the user's side, it allows mu

OMGs Model Driven Architecture initiative comes at a time where information system builders and integrators have realized that application design and thus application interoperability is not primarily a technology issue but is about understanding different types of systems, involving different professional and scientific disciplines. Understanding requires thinking and thinking is modeling. Hence, MDA provides a framework for modeling systems, especially those systems that are relevant in the context of IT-

In the past decade, networked virtual environments (NVEs) have been an increasingly active area of research, with the first commercial systems emerging recently. Graphical and behavioral representation of users within such systems is a particularly important issue that has lagged in development behind other issues such as network architectures and space structuring. We expose the importance of using virtual humans within these systems and provide a brief overview of several virtual human technologies used i

Progress in mobile robotics requires the researchers to access and improve all modules that compose the robot, from low-level mechanical components to high-level reasoning systems. This paper presents the development process of the robots built at the Autonomous Systems Lab, EPFL Lausanne, Switzerland. Starting from the mechanical and electrical design up to the application, we show the challenges that needed to be faced as well as the solutions that have been devised. The description covers aspects like th

Systems that support mobile agents are increasingly being used on the global Internet. An important application that is considered for these agents is electronic commerce, where agents roam the World Wide Web in search of goods for their owners. In these applications, an agent moves along some itinerary in order to search for the best offer for the good sought by the user. The problem with this approach is that malicious providers on the agent's itinerary can damage the agent, tamper with the agent so that

Miniaturized, integrated sensors and actuators called microsystems are a rapidly growing field with great future potential. In order to promote their use further, specialists must make them more accessible to system designers at all stages of development. This can be done through behavioral modeling of sensors and actuators which can be used in conjunction with models of the associated electronics to simulate a complete microsystem. Additionally, models of microsystem components realized during modeling and

Designing Micro/Nano Systems for a Safer and Healthier Tomorrow

Chat with Graph Search

Thermo-Economic Modelling and Optimisation of Fuel Cell Systems

Beyond "Web of Trust": Enabling P2P E-commerce

A Green's tensor approach to the modeling of nanostructure replication and characterization

Optimal location of FACTS devices to enhance power system security

A POEtic Architecture for Bio-Inspired Hardware

Transforming the feature vectors to improve HMM based cursive word recognition systems

Personalized navigation of heterogeneous product spaces using SmartClient

Strengthening MDA by Drawing from the Living Systems Theory

Simulating virtual humans in networked virtual environments

A Complex Mechatronic System: from Design to Application

Introducing Trusted Third Parties to the Mobile Agent Paradigm

Towards an integrated frame-work for data exchange in microsystem applications